Patents by Inventor Xin Miao

Xin Miao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11195911
    Abstract: A semiconductor structure is provided that includes nanosheet containing devices having a bottom dielectric isolation structure and high quality source/drain (S/D) structures. In the present application, the bottom dielectric isolation structure is formed after the S/D structures to ensure high quality epitaxy for both long channel and short channel nanosheet containing devices. The bottom dielectric isolation structure of the present application has a first portion that is located beneath each nanosheet stack and a second portion that is located in a single diffusion break point trench.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: December 7, 2021
    Assignee: International Business Machines Corporation
    Inventors: Ruilong Xie, Xin Miao, Takashi Ando, Jingyun Zhang
  • Patent number: 11196001
    Abstract: Metal-assisted chemical etching is employed to form a three-dimensional (3D) resistive random access memory (ReRAM) in which the etching aspect ratio limit is extended and the top trench and bottom trench CD uniformity is improved. The 3D ReRAM includes a metal catalyst located between a bitline electrode and a selector device. Further, the 3D ReRAM includes vertically stacked and spaced apart replacement wordline electrodes that are located adjacent to the bitline electrode.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: December 7, 2021
    Assignee: International Business Machines Corporation
    Inventors: Xin Miao, Kangguo Cheng, Wenyu Xu, Chen Zhang
  • Publication number: 20210358911
    Abstract: A fork-sheet semiconductor device includes a first-type source/drain region on a substrate and a second-type source/drain region on the substrate and separated from the first-type source/drain region by an insulator pillar. The fork-sheet semiconductor device further includes a first metal portion and a second metal portion. The first metal portion completely covers a first upper surface and a first exposed sidewall the first-type source/drain region and the second metal portion completely covers a second upper surface and a second exposed sidewall the second-type source/drain region. The first and second metal portions are separated from one another by the insulator pillar. A first-type contact portion extends vertically from the first metal portion and an opposing second-type contact portion extends vertically from the second metal portion. A first upper interconnect structure contacts the first-type contact portion and a second upper interconnect structure contacts the second-type contact portion.
    Type: Application
    Filed: May 15, 2020
    Publication date: November 18, 2021
    Inventors: Jingyun Zhang, Ruilong Xie, Alexander Reznicek, Xin Miao
  • Patent number: 11177369
    Abstract: A method of forming a semiconductor device and resulting structure in which a trench is formed extending through a plurality of layers on a semiconductor substrate. The plurality of layers includes a sequence of dielectric materials. A first portion of the plurality of layers corresponds to a bottom vertical field effect transistor (VFET) and a second portion of the plurality of layers corresponds to a top VFET. A sacrificial layer separates the bottom VFET from the top VFET. A fin is formed within the trench by epitaxially growing a semiconductor material. A hard mask is formed above a central portion of the plurality of layers. Portions of the plurality of layers not covered by the hard mask are removed. The first portion of the plurality of layers is covered to remove the sacrificial layer. The recess resulting from the removal of the sacrificial layer is filled with an oxide material.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: November 16, 2021
    Assignee: International Business Machines Corporation
    Inventors: Lan Yu, Xin Miao, Chen Zhang, Heng Wu, Kangguo Cheng
  • Publication number: 20210348984
    Abstract: A magnetic levitation test system and an electromagnet test method. A vehicle-mounted controller (1024), an electromagnet controller, and an electromagnet are subjected to joint test by means of the magnetic levitation test system integrated with a vehicle-mounted controller test bed (102), an electromagnet controller test bed (104), and an electromagnet test bed (106). The running condition of a train can be simulated, and the vehicle-mounted controller (1024), the electromagnet controller, and the electromagnet are subjected to joint test under the simulated running condition of the train. Therefore, the vehicle-mounted controller (1024), the electromagnet controller, and the electromagnet are subjected to function verification, thereby reducing the fault rate when the vehicle-mounted controller (1024), the electromagnet controller, and the electromagnet are used at the same time.
    Type: Application
    Filed: October 17, 2019
    Publication date: November 11, 2021
    Applicant: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Fujie JIANG, Jian CHEN, Yanmin LI, Xin MIAO, Shouliang JIANG
  • Patent number: 11171204
    Abstract: A method of forming a punch through stop region in a fin structure is disclosed. The method may include forming a doped glass layer on a fin structure and forming a masking layer on the doped glass layer. The method may further include removing a portion of the masking layer from an active portion of the fin structure, and removing an exposed portion the doped glass layer that is present on the active portion of the fin structure. A remaining portion of the doped glass layer is present on the isolation portion of the fin structure. Dopant from the doped glass layer may then be diffused into the isolation portion of the fin structure to form the punch through stop region between the active portion of the fin structure and a supporting substrate.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: November 9, 2021
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Sanjay C. Mehta, Xin Miao, Chun-Chen Yeh
  • Patent number: 11164940
    Abstract: A method of forming a semiconductor structure is provided. Trenches are formed in a first dielectric layer having a first height on a substrate. First III-V semiconductor patterns including aluminum are formed in the trenches to a second height lower than the first height. Second III-V semiconductor patterns are formed on the first III-V semiconductor patterns to a third height not higher than the first height to form fins including the first and second III-V semiconductor patterns. The first dielectric layer is completely removed to expose the fins. Selective oxidation is performed to oxidize the first III-V semiconductor patterns to form oxidized first III-V semiconductor patterns. Fin patterning is performed. A second dielectric layer is formed to cover the fins. The second dielectric layer is recessed to a level not higher than top surfaces of the oxidized first III-V semiconductor patterns. The semiconductor structure is also provided.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: November 2, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Xin Miao, Wenyu Xu, Chen Zhang
  • Publication number: 20210336056
    Abstract: FET devices with bottom dielectric isolation and sidewall implants in the source and drain regions to prevent epitaxial growth below the bottom dielectric isolation are provided. In one aspect, a semiconductor FET device includes: a device stack(s) disposed on a substrate, wherein the device stack(s) includes active layers oriented vertically over a bottom dielectric isolation layer; STI regions embedded in the substrate at a base of the device stack(s), wherein a top surface of the STI regions is recessed below a top surface of the substrate exposing substrate sidewalls under the bottom dielectric isolation region, wherein the sidewalls of the substrate include implanted ions; source and drains on opposite sides of the active layers; and gates surrounding a portion of each of the active layers, wherein the gates are offset from the source and drains by inner spacers. A method of forming a semiconductor FET device is also provided.
    Type: Application
    Filed: April 22, 2020
    Publication date: October 28, 2021
    Inventors: Xin Miao, Alexander Reznicek, Jingyun Zhang, Ruilong Xie
  • Patent number: 11152460
    Abstract: A method of forming a punch through stop region in a fin structure is disclosed. The method may include forming a doped glass layer on a fin structure and forming a masking layer on the doped glass layer. The method may further include removing a portion of the masking layer from an active portion of the fin structure, and removing an exposed portion the doped glass layer that is present on the active portion of the fin structure. A remaining portion of the doped glass layer is present on the isolation portion of the fin structure. Dopant from the doped glass layer may then be diffused into the isolation portion of the fin structure to form the punch through stop region between the active portion of the fin structure and a supporting substrate.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: October 19, 2021
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Sanjay C. Mehta, Xin Miao, Chun-Chen Yeh
  • Patent number: 11144362
    Abstract: Embodiments of the present disclosure relate to a computer-implemented method for container scheduling in a container orchestration system (COS). According to the method, a new unit comprising one or more containers are detected. Available memory for each of a plurality of candidate nodes deployed in the COS is predicted based on page sharing information of each candidate node. The plurality of candidate nodes filtered to obtain a set of filtered nodes are, wherein the available memory of each of the set of filtered node meets a memory size limitation of the new unit. Priorities of the set of filtered nodes are ranked according to one or more priority functions. The new unit is deployed to one of the filtered nodes based on the priorities.
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: October 12, 2021
    Assignee: International Business Machines Corporation
    Inventors: Qin Yue Chen, Han Su, Feifei Li, Chang Xin Miao
  • Patent number: 11121215
    Abstract: A technique relates to a semiconductor device. A stack includes two or more nanowires separated by a high-k dielectric material, the high-k dielectric material being formed on at least a center portion of the two or more nanowires in the stack. A separation space between the two or more nanowires is less than two times a thickness of the high-k dielectric material formed on a side wall of the two or more nanowires. A source or a drain formed on sides of the stack.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: September 14, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Juntao Li, Kangguo Cheng, Chen Zhang, Xin Miao
  • Publication number: 20210280674
    Abstract: Field effect transistors include a stack of nanowires of vertically arranged channel layers. A source and drain region is disposed at respective ends of the vertically arranged channel layers. A gate stack is formed over, around, and between the vertically arranged channel layers. Internal spacers are each formed between the gate stack and a respective source or drain region, with at least one pair of spacers being positioned above an uppermost channel layer.
    Type: Application
    Filed: May 6, 2021
    Publication date: September 9, 2021
    Inventors: Josephine B. Chang, Bruce B. Doris, Michael A. Guillorn, Isaac Lauer, Xin Miao
  • Patent number: 11107905
    Abstract: A method of controlling an effective gate length in a vertical field effect transistor is provided. The method includes forming a vertical fin on a substrate, and forming a bottom spacer layer on the substrate adjacent to the vertical fin. The method further includes forming a dummy gate block adjacent to the vertical fin on the bottom spacer layer. The method further includes forming a top spacer adjacent to the vertical fin on the dummy gate block, and removing the dummy gate block to expose a portion of the vertical fin between the top spacer and bottom spacer layer. The method further includes forming an absorption layer on the exposed portion of the vertical fin. The method further includes heat treating the absorption layer and vertical fin to form a dopant modified absorption layer, and removing the dopant modified absorption layer.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: August 31, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Xin Miao, Chen Zhang, Kangguo Cheng, Wenyu Xu
  • Patent number: 11101181
    Abstract: A method for manufacturing a semiconductor device includes forming a first plurality of fins in a first device region on a substrate, forming a second plurality of fins in a second device region on the substrate, forming bottom source/drain regions on the substrate and around lower portions of each of the first and second plurality of fins in the first and second device regions, forming a dummy spacer layer on the bottom source/drain region in the first device region, wherein the dummy spacer layer includes one or more dopants, and forming a plurality of doped regions in the first and second plurality of fins in the first and second device regions, wherein the plurality of doped regions in the first device region extend to a greater height on the first plurality of fins than the plurality of doped regions in the second device region on the second plurality of fins.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: August 24, 2021
    Assignee: International Business Machines Corporation
    Inventors: Xin Miao, Kangguo Cheng, Wenyu Xu, Chen Zhang
  • Patent number: 11094798
    Abstract: An embodiment of the invention may include a method of forming a semiconductor structure, and the resulting semiconductor structure. The method may include removing a gate region from a layered stack located on a source/drain layer. The layered stack includes a first spacer located on the source drain layer, a dummy layer located on the first spacer, and a second spacer located on the dummy layer. The method may include forming a channel material above the source/drain layer in the gate region. The method may include forming a top source/drain on the channel material. The method may include forming a hardmask surrounding the top source/drain. The method may include removing a portion of the layered stack that is not beneath the hardmask.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: August 17, 2021
    Assignee: International Business Machines Corporation
    Inventors: Lan Yu, Xin Miao, Chen Zhang, Heng Wu, Kangguo Cheng
  • Patent number: 11094823
    Abstract: A method for inducing stress in a device channel includes forming a stress adjustment layer on a substrate, the stress adjustment layer including an as deposited stress due to crystal lattice differences with the substrate. A device channel layer is formed on the stress adjustment layer. Cuts are etched through the device channel layer and the stress adjustment layer to release the stress adjustment layer to induce stress in the device channel layer. Source/drain regions are formed adjacent to the device channel layer.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: August 17, 2021
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Nicolas J. Loubet, Xin Miao, Alexander Reznicek
  • Patent number: 11088288
    Abstract: A semiconductor structure and formation thereof. The semiconductor structure including: a nano-sheet field-effect transistor; a layer of support material that is located beneath a stack of nano-sheets that are included in the nano-sheet field-effect transistor; and a vertical support that is affixed to a stack of nano-sheets, wherein the vertical support (i) has an end that is affixed to the layer of support material and (ii) a side that is a affixed to at least one nano-sheet of the stack of nano-sheets.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: August 10, 2021
    Assignee: International Business Machines Corporation
    Inventors: Ruilong Xie, Jingyun Zhang, Xin Miao, Alexander Reznicek
  • Patent number: 11088026
    Abstract: A device having co-integrated wimpy and nominal transistors includes first source/drain regions formed with a semiconductor alloy imparting strain into a first channel region. The device also has wimpy transistors including second source/drain regions formed with the semiconductor alloy that has been decomposed to include a larger amount of an electrically active atomic element than contained in the semiconductor alloy of the first source/drain region.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: August 10, 2021
    Assignee: ELPIS TECHNOLOGIES INC.
    Inventors: Kangguo Cheng, Nicolas J. Loubet, Xin Miao, Alexander Reznicek
  • Patent number: 11081482
    Abstract: A method of fabricating adjacent vertical fins with top source/drains having an air spacer and a self-aligned top junction, including, forming two or more vertical fins on a bottom source/drain, forming a top source/drain on each of the two or more vertical fins, wherein the top source/drains are formed to a size that leaves a gap between the adjacent vertical fins, and forming a source/drain liner on the top source/drains, where the source/drain liner occludes the gap between adjacent top source/drains to form a void space between adjacent vertical fins.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: August 3, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Xin Miao, Wenyu Xu, Chen Zhang
  • Patent number: 11081400
    Abstract: A method of fabricating a vertical fin field effect transistor with a merged top source/drain, including, forming a source/drain layer at the surface of a substrate, forming a plurality of vertical fins on the source/drain layer; forming protective spacers on each of the plurality of vertical fins, forming a sacrificial plug between two protective spacers, forming a filler layer on the protective spacers not in contact with the sacrificial plug, and selectively removing the sacrificial plug to form an isolation region trench between the two protective spacers.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: August 3, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Xin Miao, Wenyu Xu, Chen Zhang